cmd/geth, cmd/utils: init/removedb on light/full dbs simultaneously

cmd/geth/chaincmd.go

@@ -58,10 +58,10 @@ participating.
 		ArgsUsage: "<filename> (<filename 2> ... <filename N>) ",
 		Category:  "BLOCKCHAIN COMMANDS",
 		Description: `
-The import command imports blocks from an RLP-encoded form. The form can be one file 
+The import command imports blocks from an RLP-encoded form. The form can be one file
-with several RLP-encoded blocks, or several files can be used. 
+with several RLP-encoded blocks, or several files can be used.
-If only one file is used, import error will result in failure. If several files are used, 
+If only one file is used, import error will result in failure. If several files are used,
-processing will proceed even if an individual RLP-file import failure occurs.   
+processing will proceed even if an individual RLP-file import failure occurs.
 `,
 	}
 	exportCommand = cli.Command{
@@ -103,17 +103,14 @@ Use "ethereum dump 0" to dump the genesis block.
 // initGenesis will initialise the given JSON format genesis file and writes it as
 // the zero'd block (i.e. genesis) or will fail hard if it can't succeed.
 func initGenesis(ctx *cli.Context) error {
+	// Make sure we have a valid genesis JSON
 	genesisPath := ctx.Args().First()
 	if len(genesisPath) == 0 {
-		utils.Fatalf("must supply path to genesis JSON file")
+		utils.Fatalf("Must supply path to genesis JSON file")
 	}
-
-	stack := makeFullNode(ctx)
-	chaindb := utils.MakeChainDatabase(ctx, stack)
-
 	file, err := os.Open(genesisPath)
 	if err != nil {
-		utils.Fatalf("failed to read genesis file: %v", err)
+		utils.Fatalf("Failed to read genesis file: %v", err)
 	}
 	defer file.Close()
 
@@ -121,12 +118,19 @@ func initGenesis(ctx *cli.Context) error {
 	if err := json.NewDecoder(file).Decode(genesis); err != nil {
 		utils.Fatalf("invalid genesis file: %v", err)
 	}
-
+	// Open an initialise both full and light databases
-	_, hash, err := core.SetupGenesisBlock(chaindb, genesis)
+	stack := makeFullNode(ctx)
-	if err != nil {
+	for _, name := range []string{"chaindata", "lightchaindata"} {
-		utils.Fatalf("failed to write genesis block: %v", err)
+		chaindb, err := stack.OpenDatabase(name, 0, 0)
+		if err != nil {
+			utils.Fatalf("Failed to open database: %v", err)
+		}
+		_, hash, err := core.SetupGenesisBlock(chaindb, genesis)
+		if err != nil {
+			utils.Fatalf("Failed to write genesis block: %v", err)
+		}
+		log.Info("Successfully wrote genesis state", "database", name, "hash", hash)
 	}
-	log.Info("Successfully wrote genesis state", "hash", hash)
 	return nil
 }
 
@@ -245,24 +249,29 @@ func exportChain(ctx *cli.Context) error {
 
 func removeDB(ctx *cli.Context) error {
 	stack, _ := makeConfigNode(ctx)
-	dbdir := stack.ResolvePath(utils.ChainDbName(ctx))
-	if !common.FileExist(dbdir) {
-		fmt.Println(dbdir, "does not exist")
-		return nil
-	}
 
-	fmt.Println(dbdir)
+	for _, name := range []string{"chaindata", "lightchaindata"} {
-	confirm, err := console.Stdin.PromptConfirm("Remove this database?")
+		// Ensure the database exists in the first place
-	switch {
+		logger := log.New("database", name)
-	case err != nil:
+
-		utils.Fatalf("%v", err)
+		dbdir := stack.ResolvePath(name)
-	case !confirm:
+		if !common.FileExist(dbdir) {
-		fmt.Println("Operation aborted")
+			logger.Info("Database doesn't exist, skipping", "path", dbdir)
-	default:
+			continue
-		fmt.Println("Removing...")
+		}
-		start := time.Now()
+		// Confirm removal and execute
-		os.RemoveAll(dbdir)
+		fmt.Println(dbdir)
-		fmt.Printf("Removed in %v\n", time.Since(start))
+		confirm, err := console.Stdin.PromptConfirm("Remove this database?")
+		switch {
+		case err != nil:
+			utils.Fatalf("%v", err)
+		case !confirm:
+			logger.Warn("Database deletion aborted")
+		default:
+			start := time.Now()
+			os.RemoveAll(dbdir)
+			logger.Info("Database successfully deleted", "elapsed", common.PrettyDuration(time.Since(start)))
+		}
 	}
 	return nil
 }

cmd/utils/flags.go

@@ -908,22 +908,16 @@ func SetupNetwork(ctx *cli.Context) {
 	params.TargetGasLimit = new(big.Int).SetUint64(ctx.GlobalUint64(TargetGasLimitFlag.Name))
 }
 
-func ChainDbName(ctx *cli.Context) string {
-	if ctx.GlobalBool(LightModeFlag.Name) {
-		return "lightchaindata"
-	} else {
-		return "chaindata"
-	}
-}
-
 // MakeChainDatabase open an LevelDB using the flags passed to the client and will hard crash if it fails.
 func MakeChainDatabase(ctx *cli.Context, stack *node.Node) ethdb.Database {
 	var (
 		cache   = ctx.GlobalInt(CacheFlag.Name)
 		handles = makeDatabaseHandles()
-		name    = ChainDbName(ctx)
 	)
-
+	name := "chaindata"
+	if ctx.GlobalBool(LightModeFlag.Name) {
+		name = "lightchaindata"
+	}
 	chainDb, err := stack.OpenDatabase(name, cache, handles)
 	if err != nil {
 		Fatalf("Could not open database: %v", err)